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Sister Mary K. O'Brien

November 27, 2017

Sister Mary K. O’Brien, BVM (Jean Catherine), 84, of Caritas Center, 1130 Carmel Drive, Dubuque, Iowa, passed away Nov. 27, 2017, at Caritas Center.

Visitation will be from 10–11:15 a.m. on Monday, Dec. 4, 2017, in the Marian Hall Chapel, followed by a Sharing of Memories. Funeral liturgy will be at 1:30 p.m. Burial is in the Mount Carmel cemetery.

Mary K. taught elementary school in Sioux City, Iowa; Bellerose, N.Y.; and Grayslake and Chicago, Ill. Also in Illinois, she was elementary school principal in Chicago and Wilmette, and served as elementary school resource person in Mundelein.

She was born in Chicago on Oct. 31, 1933, to John Philip and Katherine Gilmore O’Brien. She entered the BVM congregation Sept. 8, 1951, from Our Lady of Angels Parish, Chicago. She professed first vows on March 19, 1954, and final vows on July 16, 1959.

She was preceded in death by her parents. She is survived by a brother, John (Jack) P. (Mary Jean) O’Brien, Buffalo Grove, Ill.; a sister, Margaret (Peg) Connolly, Arlington Heights, Ill.; nieces; nephews; and the Sisters of Charity, BVM, with whom she shared life for 66 years.

Memorials may be given to Sisters of Charity, BVM Support Fund, 1100 Carmel Drive, Dubuque, IA 52003 or online at

Leonard Funeral Home, 2595 Rockdale Rd., Dubuque, Iowa 52003 is in charge of arrangements.

 Service Information

A service summary is not available

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